高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2199.

• 研究论文 • 上一篇    下一篇

双钙钛矿型Ba2SmSbO6的水热合成和结构表征

郑文君1, 黄红波2, 武丽艳1, 夏元复2   

  1. 1. 南开大学化学系, 天津300071;
    2. 南京大学物理系, 南京210093
  • 收稿日期:2004-06-29 出版日期:2004-12-24 发布日期:2004-12-24
  • 基金资助:

    国家自然科学基金(批准号:20273033);山东大学晶体材料国家重点实验室基金资助

Hydrothermal Synthesis and Structure Characterization of Double Perovskite-type Oxide, Ba2SmSbO6

ZHENG Wen-Jun1, HUANG Hong-Bo2, WU Li-Yan1, XIA Yuan-Fu2   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071;
    2. Department of Physics, Nanjing University, Nanjing 210093
  • Received:2004-06-29 Online:2004-12-24 Published:2004-12-24

摘要: 在温和水热条件下合成了双钙钛矿型Ba2SmSbO6,通过XRD,IR,ICP,XPS,VSM和121SbMöss-bauer谱对产物的物相、结构、锑离子价态和磁化率等进行了表征.Ba2SmSbO6具有立方钙钛矿结构,Fm3m空间群,晶胞参数a=0.85097(20)nm,V=0.61623(20)nm,Sm和Sb离子呈岩盐型有序排列,锑为+5价.

关键词: 双钙钛矿, 水热合成, B离子有序

Abstract: Hydrothermal technique was used for the synthesis of double perovskite-type oxide Ba2SmSbO6 and the crystal structure was refined by Rietveld using GSAS software. The Ba2SmSbO6 compound has a cubic symmetry(space group Fm3m) with cell parameters a= 0.850 97(20) nm and V= 0.616 23(25) nm3, and it shows an ordered arrangement of Sm and Sb ions. The synthesized Ba2SmSbO6 was characterized by XRD, IR, ICP, XPS and 121Sb Mössbauer spectrum methods. The results indicated that the molar ratio of n(Ba):n(Sm):n(Sb) is closing to 2:1:1, and the antimony valence state is +5.

Key words: Double perovskite-type oxide, Hydrothermal synthesis, Ordered B-site ions

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